1. which of the follwing actions prevent base metal errosion during brazing?

a. chosing a filler metal that is highly soluble in the base matal being brazed

b. exposing the work piece to heat for an extended period of time

c. brazing at the lowest possible temperature

d. increasing the heating rate

2. excessive cooling rates can lead to which of the following? select all that apply.

a. incomplete flux activation

b. incomplete joint formation

c. residual stress buildup

d. solder expulsion